A method is described for reducing NO.sub.x emissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/precalciner vessel.

 
Web www.patentalert.com

< Papermaker's forming fabric with cross-direction yarn stitching and ratio of top machined direction yarns to bottom machine direction yarns of less than 1

> Methods and compositions for detecting nucleic acids using scanning probe microscopy and nanocodes
~ 00498